Electrical heater for engine-jacket systems



Sept. 24, 1929. H. w. JELLIFFE ELECTRICALHEATER FOR ENGINE JACKET SYSTEMS Filed March 16, 1927 2 Sheets-Sheet Hem/7y Elem/77'" lFcmoWa INVENTOR HowAmPWJnL/rre- BY M.@

ATTORNEY Patented Sept. 24, 1929 m UNITED STATES PATENT OFFICE HOWARD W. JELLIFFE, F CLEVELAND, OHIO ELECTRICAL HEATER FOR ENGINE-JACKET SYSTEMIS Application filed March 16, 1827. Serial No. 175,777.

This invention relates to electrical heaters Figure 8 is a cross section taken on the line for engine acket systems, and more especially 88 of Fig. 6, and to heaters for systems connecting the jackets Figure 9 is an elevation of a detail. of auto engines with the radiators, more Like parts are designated by similar referparticularly for internal combustion engines once characters throughout the description of as auto motors. It is my purpose to provide the various views. a heating unit that is readily removable from It is to be noted that I have provided an the mounting device that is incorporated in upright and elongated cup member 5 made of the circulating systems usually connecting the metal, usually but not essentially of brass,

l0 radiator with the engine, as the acket of the having a closed end at the bottom and an enlatter. larged open end, the latter being provided It is an object of my invention to provide with stepped enlargements forming thereby, a T whose vertical pipe is ordinarily secured Shoulders, the upper one being designated by to the longitudinal tube and permitting oirnumeral 6 upon which the weight of the cup 15 culafion of liquid from the said system up 5 Will ordinarily Post as it bears upon the into the vertical portion where a heating unit outer structure later to be described more in is mounted and provided connecfigng (.lQt-tll. cup SiZTUCi1U.l'G is designed t0 be with suitable electric currnt, though def y removed ilfim the S Outer mechatach bl h r b th Cooler System f th nism, as w1ll be later explained.

20 engine may be made use of for maintaining The structure to be directly associated with h at, i h y te hil th hi l i Sta,- the cooler system of the auto, comprises a ti ry d th engine i t i tubular piece 7 whose ends extend in the di- It i a f th bj t f my improvement rection of the pipes of the system, and will t construct h h ti it f tt henter the pipes and be detachably secured 25 ment with the cooler system of an automobile therein y application of Screw bands h b th it 111 b t d t b about the pipes 10' usually of some caoutchouc dfl Connected d t h bl ith th composition, and tightened thereover to hold ous tubes of the system, so that the unit may the 1 7 1n the A )l 29 is not only be conveniently positioned as demfqde 1n s q of the Sald Place a to p 30 i d but may also be quickly replaced h mit free circulatioubetween the latter and the i are necessary space 9 about the sand member 5, whereby heat I th d i 1n the latter Wlll be communicated to the con- Fi 1 i a id elevation f my improved tents of the pipes 10 forming the circulatory heating unit for cooling systems shown consystem- Of Course the 55nd 91 29 need V 35 nected with the Same, not be perfectly segmental. since the connecbu Figure 2 is a side elevation of the same but t later to be l between the mam tumd at angle of 900 to the former: piece 7 and the vertical tube means to be at- Fianna 3 is 1 2 tml Vertiml Section taken tached thereto, may be somewhat outside the I outline of such opening, at least, it is not es- 40 on the hue of scntial that such attachment and said open- Figure 4 is a side elevation of the heating unit only as removed from the socket, and a portion broken away;

I Figure 5 is a cross section taken onthe line 5 55 of Fig. 2;

ing shall be uniform in size and shape.

A vertical tube member 11 is designed to enclose the lower end of the piece or memher 5, though somewhat spaced therefrom, as shown in Fig. 3, and will usuallv be of a 9a Figure 6 is an elevation of a modified form di l i approximately th t f th' pjece 7 of unit to he COImected With t e 00 2 sys- The tube 11 will ordinarily be of a standard tem in the same manner as the first form; radial size, and its lower opening shaped to l Figure 7 is a central, vertical section of the fit over varying sizes of the pieces 7 which i 50 latter form taken on the line 77 of Fig. 6; will lit the given hose or other pipes 10. To

accomplish this, the aperture 29 will be made of a standard size which will be that used when attaching to the smaller sizes of pieces 7, and the lower end of the member 11 will then be cut concave in cross section to contact the surface of the piece 7, shown in Fig. 3. It is my intention in this construction to extend the upper end of the part 11 less than one half the length of the member 5, another tubular member 13 being applied over the upper end of the member 5 though spaced thereabout and spaced from the edge of part 11, a section 14 of hose or similar material enclosing the separated ends of the parts 11 and 13 to connect watertight these parts by the provision of a pair of clamps 15 tightened about the ends of section 14 to bind them against parts 11 and 13.

The member 5 contains therein the heating element 16 having the usual connections 17 to which a suitable plug, or other means for leading wires from a suitable source of electric energy, may be detachably connected. No claim is made to this particular feature. A central core 18 is suspended from an upper cap 19 of similar dielectric material which is shaped to lit within the member 5 but having a peripheral flange 20 extending out over the enlarged cylindrical portion 21 of member 5, as shown in Fig. 3. From one said connection 17 a conductor 22 leads down through the center of the core 18, and at the bottom of the core is directly connected with the conductor 25 leading from the other con nection 17 and spirally wound about the core 18, and insulated by a suitable dielectric substance 24, the said spirals of the element 25 being closely positioned adjacent the interior surface of member 5, as illustrated.

In Figs. 6, 7 and 8, I have shown a second form of mounting the heating unit in the cooling system, in which second form bf heater, I provide cylindrical members 31 and 33 spaced about the member 35, but not wholly separated, the part 33 being connected di rectly, though detachably to the cylindrical member 31. The band 26 binds the parts 31 and 33 together in this second form. These parts 31 and 33 are sufiiciently elongated to telescope for a certain distance, as at 23, so that but one encircling band 26 will be required to bind the ends of the parts 31 and 33 together. The connection of these parts will be detachable, however, so that by loosening the band 26, the parts 31 and 33 may readily be disengaged for the removal of the member .35 and contents therefrom for anypurpose.

In the second form it has been found advantageous to split the lower end of the upper or outer part 33 at one or more points 27, making easier the insertion of the lower tube part 31 into the lower end of the upper part 33 before tightening the encircling band 26 about the telescoped ends. In this form, the receptacle member 35 is provided with an upper flange 30 resting-upon the upper edge of the tube member 33 and is fixed thereto by soldering or welding at 341;, as shown in Fig. 7. The member receives detachably the heating element 16 or another that may be desired to use and is of the proper shape and size, the form of heater unit, including the cap member 19 and the suitable connector clips 17, being determined by local conditions largely. It is however, to be understood that the unit 16 is to be removable from the receptacle member 5, in the one case, and from the member 35 in the other, but the parts 33 and fixedly secured together at 34; and the tube 13 of the first form fixed to the shoulder 6 of the member 5 by welding or soldering at 4, as shown in Fig. 3.

In the second form shown in Figs. 6, 7 and 8, the encircling band 28 is just outside of the tube members 33 and flange 30, and is secured to both. lVithin this socket at the upper end of the heater, the cap 19 may restwith the weight of the suspended element 16 borne thereby. By this arrangement, lifting the upper tube member 33 from the tube 31, the band 26 having been removed, will leave upon the piece 36 only the tube 31, and the metal band 26, if-the latter is not detached in the tube 33 by loosening, may drop upon piece 36 or be carried about the lower end '0 tube In either case, the upper ion on, when removed from the lower secti n 31, takes with it the heater unit 16 in its case 35 connected to the upper tube 33 at the welding point 34.

In the first form, the upper tube 13 may be removed from the lower tube 11 by loosening the lower band 15, when the hose cylinder 14 will. be carried by the upper tube 13 together with the enclosed heater unit 16 and the cup member 5 which latter is welded or soldered securely to the tube member 13 at the point 4,

shown in Fig. 3.

Opc-mton.The main section-7 of the first form and part 36 of the form in Fig. 7, each forms together with the lower tube member 11 or 31, a T which is readily insertible in the cooler system of an auto, the size of the base tube, 7 or 36, being variable may be desired, the part 36 of the second form being shown as relatively larger than the part 7 of the first form. In either form, however, ends of the tubesusually hoseof the said system are tele scoped over the ends of the base tube, as above stated, and ordinarily clamps 8 tightened about the hose ends, as shown in Figs. 1 and 5.

In the first form of the T, the lower tube 11 is soldered or welded to the base 7 at the segmental edge 12 and about the opening in the base, while in the second form the tube 31 of the T is soldered or welced to the base 36 on the edge 32. In either case, the heater unit 16 and its supports are detachably connected with the lower tubular member, 11

or 31. A conspicuous arrangement of the improved structure is the ready attachment to the main and lower member or T, of the heater unit, without any special provision for mounting of the heater in the systcm-the heater may be connected therein or removed therefrom. Only the open tubular element 11 or 31, is bent out of the line of the system pipes, even when the heater unit and carriers for it are wholly removed. In such case the tube, 11 or 31, may be covered as desired when the heater unit is temporarily removed.

In either form of the heater case, an open space 9 is furnished between the inner casing 5 carrying therein the unit 16, and the outer casing 14 connected by the tubes 11 and 13 in the first form; and between the casing 35 and tubes 31 and 33 of the other form of construction. Heat generated, therefore, in the heater element 16 within the cup member 5 or 35, will be transmitted to the fluid in the space 9, and thereby to the fluid in the base member 7 or 36 of the T, and thence to the tubes of the system to be heated from said base member.

It is claimed as a special advantage of the plan shown for mounting the heater upon the T, that no unusual means for supporting the heater need be provided, since the weight of the heater, including parts 16 and 18, rest above the T, and the connection of the heate with the lower cylinder 31 or 11 of the T does not require relative rotation of any of the parts, an advantage which will be readily evident. For this reason none of these telescoping parts are threaded together. It will also be seen that no disadvantageous position of the heater will be necessary or desirable to attain the heating function when the heater is detachably connected by the clamps 15 or 26 with the lower member 11 or 31. The T may therefore be constructed with a stand ard tube 11 or 31 of a size to readily receive the unit 16 in the member 5 or 35, while the base tube of the T may be of different sizes to lit the pipes of the circulatory system, as above explained. My construction permits the use of a heater with its cup member of desired length, and provides mounting of the same in connection with the circulatory system without using a cross member of the T of a length equal to even approximately that of the heater. Indeed, in both forms the integral parts 11 and 31, of the T, are less than one half the length of the heater members 5 or 35. This has a great practical advantage, since when the band 15 or 26 is removed, the heater parts with their mountings, including the members 14 or 33, only the members 11 or 31 will remain integral with the T. It is therefore desirable to shorten these cross members 11 or 31 as much as possible. When the heater is removed, it is only necessary to provide a sultable cap or cover for these cross members which are not extending detrimentally to the use of the system, when the heater is removed.

While I have referred to the system to be heated as the cooler system of auto engines, which may be the engine jacket system, I am not to be understood as limited to such particular circulatory system, but I propose to use the heater unit for heating various pipe systems other than the cooler systems of autos.

Having now described my invention and the manner of its application, what I claim and desire to secure by Letters Patent of the United States, is

1. An electrical heater for insertion in the cooling system of an internal combustion engine comprising, a T-member whose alined ends are adapted for connection in such sys tem and whose cross tube is open and relatively short, a cylindrical element mounted in axial alinement with the said cross tube and connected therewith by telescopic, threadless connection and extending upwardly there from, an elongated cup member of smaller radius than said cross tube but of a length greater than the combined lengths of the cylindrical element and the cross tube, having an enlarged upper end forming a shoulder welded upon the edge of the said cylindrical element, a clamp engaging the said connection of the said alined cylindrical element and tube externally thereby forming an imperforate inner space between the alined tubes and the said cup member, and an electrical ieater unit removably positioned within said cup member.

2. An electrical heater for insertion in thecooling system of an engine comprising, a T-member whose alined ends are adapted for connection in such system and having a relatively short cross tube, a tubular element mounted detachably in axial alinement with the said cross tube, the intermediate ends of the alined tubes being threadless and adapted to be telescoped in operative position, clamp means for binding the said telescoped ends together detachably, an elongated cup member of a length equal to substantially the combined length of the tubular element and cross tube and having an enlarged upper end forming a shoulder secured upon the edge of the detachable tubular member by welding with the cup member spaced interiorly from the telescoped members, whereby the removal of the upper telcscoped member will carry with it the cup member and its contents, an elec trical heater unit removably seated within said cup member, by threadless connection therewith and connections from said heater unit for attachment to a source of electrical energy.

In witness whereof I have hereunto set my hand this 14th day of February, 1927.

HOVJARD V]. J ELLIFFE. 

